Question

A 6.85 g sample of the hydrate Sr(OH) . xh2o
is dried in an oven to give 3.13 g of amydiros
Sr(OH),. What is the value of x ? (Atomic weights : Sr = 87.60.0 = 160, H = 10)
(a) 8
(b) 12
(c) 10
d)6​

Answer 1

Answer: a. 8

Explanation:

18x * 100 /121.6+18x =54.3

1800x= 6603 + 977x

823x = 6603

X = 8 (approx.)